Malicious PDF — malware analysis report

Static analysis result for SHA-256 3946bdf56a737061…

MALICIOUS

PDF

45.9 KB Created: 2020-08-08 13:41:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: be0033f392c5d6eebb6c40b0d90813e6 SHA-1: 27a68babbb630fc49de74c35f7e05b8bb10ad0e5 SHA-256: 3946bdf56a737061adeb294c81e744e40a7b07a8b17ef241d24f463895d4ca67
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the same URL and references a book title, suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm designed to obscure the malicious redirector. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=irrational+exuberance+book+pdf In PDF document text
    • http://buruzorag.victoriasmithmusic.com/uploads/1/3/0/7/130776728/1667654.pdfIn PDF document text
    • http://wutavapo.creativelyyourscustomcakes.com/uploads/1/3/1/3/131379578/wavun.pdfIn PDF document text
    • http://files.mohannadgharaibeh.com/uploads/1/3/0/8/130874620/wefodigozezas.pdfIn PDF document text
    • http://files.joshuastevenpalmer.com/uploads/1/3/1/0/131070911/lelixotimopa-rajotixisedebag-savomadorasimo-fegewefodi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1787/1266/files/administracion_de_pequenas_empresas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5053/2001/files/31595532831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0941/files/42251784310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46676539889.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4233/2057/files/pdf_bookmark_maker_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9811/9075/files/256628292.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/1725/3542/files/stock_market_for_beginners_philippines.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/32461789197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9469/4304/files/38199451157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8773/2644/files/xebirudotoro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ledoviz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/12797025672.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6018/9594/files/52025057727.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7626 5180 bytes
SHA-256: 6421888b225fed8c39f33eb4593237074da89eca2d84b6fd6fac1ef1a3043324
font_01_sfnt_off000087d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87D7 10304 bytes
SHA-256: 8c1691d9678a8a038be7d4e1591389b7c3543bffd428cea2f06b4bbaf5b6734f

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